Arbitrary dual-frequency power divider based on right-left transmission line and its production method

Abstract

The invention discloses an arbitrary dual-frequency Wilkinson power divider based on a composite left-handed transmission line, which includes three ports, four right-handed transmission lines, two left-handed transmission lines and isolation resistors; the method includes obtaining the frequency ratio of working frequency points, establishing the phase shift value of the transmission line, Create a port transmission line, create a right-hand transmission line, create a left-hand transmission line, and create an isolation circuit. The ordinary arbitrary dual-frequency Wilkinson power splitter produced by the present invention, the compact arbitrary dual-frequency power splitter based on the composite left-handed transmission line and negative phase shift technology, and the compact arbitrary dual-frequency power splitter of the double-section impedance transformation technology can overcome the traditional power splitter which can only be odd The defect of sub-frequency multiplication work is that the length of the branch line can be shortened to less than λg / 4, which satisfies dual-frequency work and has a compact structure. The power divider of the invention is simple in design, and the required microwave plates and components are easy to obtain and easy to process. The power splitter proposed by the invention can well meet the performance requirements of the power splitter at two operating frequency points.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to an arbitrary dual-frequency Wilkinson power splitter based on a composite left-hand and right-hand transmission line. Background technique [0002] Based on the dual-frequency standard of modern wireless communication, in order to reduce the number of devices in the system, it is required that the devices used should meet the requirements of dual-frequency work as much as possible. Wilkinson power splitters are often used to feed antennas in communication systems, but traditional Wilkinson power splitters can only work at the fundamental frequency and its odd harmonic frequencies, while the current GSM wireless communication usually uses There are two working frequency bands of 900M and 1800M, so the traditional Wilkinson power divider can no longer meet the needs of modern communication. [0003] The traditional Wilkinson power divider structure is as follows figu...

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problem that the traditional power divider can only work at the fundamental frequency and its odd harmonic frequency, the length of the branch line is λ g / 4, although its size is small, it cannot work under any dual frequency;

[0012] In order to solve the dual-frequency power splitter based on two-section impedance transformation, the branch line is two λ g / 6 branches in series, although it can work at any dual frequency, but the size of the power divider is relatively large;

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